Sounds like you wanted this to fail Dude. I'm sorry but a DRK, BLM or the RNGs of days past could pull hate off of any tank with or withour Provoke. You have to be playing poorly to not realize that you must not go full blast with all of your JAs. This is what pisses a lot of people off about DRKs. They usually want to pull hate just to say, "huh huh I hitted it so hard".
I remember a while back I informd someone of BRD's ability to tank. Maybe you don't believe this either but BRD actually has the ability to hold more hate than any other job. Spamming Mazurka, Elegy, 2xMarch and having haste. Once we've build up hate (6+ cycles of Mazurka) a PLD could Invincible and not be able to pull hate from us.
So I told this PLD in my LS about it and for some reason he was infurated. He was the type who had some kinda inferiority complex and felt like NIN was taking his job. He didn't like to think that BRD could out-tank him with all of his enmity gear and enmity merits.
So we got a group together before an event and tried it. He would voke, flash etc as often as possible and I'd run through my cycle as often as possible. After each Mazurka the mob would turn to me. Before Mazurka was back up he would've pulled hate. Well after my third Mazurka he voked and then flashed... the mob didn't turn. It stuck to me. He immediately killed it (it was a low Orc in Yughott) and insisted that I was wrong and that he was able to pull hate every time.
He refused to see if, in reality, I could eventually hold the mob through a few more vokes and invincible (which I have since done). You sound like you are so against the concept of PLD/RDM for XP that you botched the test on your own by throwing out all of the damage you possibly could.